What it is and where it sits
The Square D Switches & Sensors (Telemecanique) XS530B1MAU20 is an inductive proximity sensor — the non-contact detection class used on machine frames, conveyor lines, and process skids to read the position of metal targets without a mechanical contact that wears out. It carries UPC 389119046964 on the carton label, which is the cleanest way to match a loose shipment or broker pallet back to the manufacturer SKU without guesswork.
Lifecycle and sourcing posture
The lifecycle stage reads current, so the part is still being produced and is the correct line to specify on a new BOM rather than chasing a last-time-buy.
Field-side wiring note
Mount to the standard cylindrical body geometry this family shares, wire per the diagram printed on the sensor body, and keep the active face clear of paint buildup — that is what eats sensing headroom on inductive devices of this class. Route the cable away from VFD power runs and welding leads so switching noise does not drift the output; ground the shield at the panel end only, because floating the field end is what keeps common-mode noise out of the discrete input card.